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Finding the Fourth Proportional to 92,786.41, 139,253.42 and 33,638.95

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Solution

The fourth proportional to 92,786.41, 139,253.42 and 33,638.95 is: 50,485.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,786.41 : 139,253.42 = 33,638.95 : x
  2. Step 2: Convert to fraction form
    92,786.41/139,253.42 = 33,638.95/x
  3. Step 3: Cross multiply
    92,786.41x = 139,253.42 × 33,638.95
  4. Step 4: Simplify right side
    92,786.41x = 4,684,338,832.71
  5. Step 5: Solve for x
    x = 4,684,338,832.71/92,786.41
  6. Step 6: Final answer
    x = 50,485.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.